Why the Galaxy does not collapse into a central supermassive Black Hole ?
Everybady knows – because a kinetic energy of the galaxy is greater then gravitational energy.

Why a gasoeous nebula does not collapse into a Black Hole ?
Everybody knows its kinetic energy is greater then gravitational energy.
It may to collapse if it radiate out its kinetic energy and gasoeous nebulas do it and become a star.

When a star collapses into a neutron star ? When it radiate its kinetic energy and gravitational energy is greater then the energy of the EM field + remaining kinetic energy.

Sometimes a neutron star is more massive than 3 Suns and kinetic energy of the particles radiate out till ...
Till the object become Black Hole like object.

We know that Black Hole like object absorbs more energy than emits by definition.
That way it is a limit for this object and it can not violate. The particles inside this object can not lose their kinetic energy and they will move through the whole volume of the Black Hole like object for ever.

Do you know how to extract the kinetic energy from a such closed system ?
Help S. Hawking to get a Nobel prize.